Disclosure summary
LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."
Source-reported weakness categories
CWE-787
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2019-17543
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| lz4_project | lz4 | * {"versionEndExcluding":"1.9.2"} |
Original records & references
- NIST NVD record
- CVE Program record
- bugs.chromium.org — Third Party Advisory
- github.com — Third Party Advisory
- github.com — Third Party Advisory
- github.com — Patch, Third Party Advisory
- github.com — Patch, Third Party Advisory
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- security.netapp.com
- www.oracle.com
- www.oracle.com
- bugs.chromium.org — Third Party Advisory
- github.com — Third Party Advisory
- github.com — Third Party Advisory
- github.com — Patch, Third Party Advisory
- github.com — Patch, Third Party Advisory
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- lists.apache.org
- security.netapp.com
- www.oracle.com
- www.oracle.com
PUBLISHED 2019-10-13T22:15:10-04:00
MODIFIED 2026-10-08T18:16:51-04:00
INGESTED 2026-10-10T20:50:18-04:00